This center, 4km east of town, has a well-developed trail system that’s good for birding, as well as for spotting mammals such as sloths, coatis and howler monkeys. The admission fee also includes a visit to a butterfly garden, a ranarium featuring poison-dart frogs, and a small lake containing caiman and turtles. Reserve in advance for the excellent night tour.
You can walk part of the way, but eventually the sidewalk ends. In other words, it's much safer to take a taxi or your own car.